CVE-2026-8744 — Denial of Service

title: CVE-2026-8744 Open5GS NRF Denial of Service Attempt
id: scw-2026-05-17-ai-1
status: experimental
level: critical
description: |
  Detects attempts to exploit CVE-2026-8744 in Open5GS by targeting the NRF component. The vulnerability lies in the ogs_sbi_subscription_data_add/ogs_sbi_nf_service_add functions, which can be triggered by specific POST requests to the NRF endpoints. This rule specifically looks for these URI patterns associated with POST requests, indicating a potential exploit attempt leading to a denial of service.
author: SCW Feed Engine (AI-generated)
date: 2026-05-17
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-8744/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/nr/v1/nrf/subscription_data'
          - '/nr/v1/nrf/nf_service'
      cs-method:
          - 'POST'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse